Young–Helmholtz theory
The Young–Helmholtz theory (based on the work of Thomas Young and Hermann von Helmholtz in the 19th century), also known as the trichromatic theory, is a theory of trichromatic color vision – the manner in which the visual system gives rise to the phenomenological experience of color. == History == === Work of Palmer === While Young is often credited as the progenitor of trichromatic color theory, a theory of color vision by George Palmer is mostly analogous to Young's, but precedes it by a quarter century.